Example 1: To describe a cluster

The following describe-clusters example retrieves details about the specified cluster.

aws ecs describe-clusters \
    --cluster default

Output:

{
    "clusters": [
        {
            "status": "ACTIVE",
            "clusterName": "default",
            "registeredContainerInstancesCount": 0,
            "pendingTasksCount": 0,
            "runningTasksCount": 0,
            "activeServicesCount": 1,
            "clusterArn": "arn:aws:ecs:us-west-2:123456789012:cluster/default"
        }
    ],
    "failures": []
}

For more information, see Amazon ECS Clusters in the Amazon ECS Developer Guide.

Example 2: To describe a cluster with the attachment option

The following describe-clusters example specifies the ATTACHMENTS option. It retrieves details about the specified cluster and a list of resources attached to the cluster in the form of attachments. When using a capacity provider with a cluster, the resources, either AutoScaling plans or scaling policies, will be represented as asp or as_policy ATTACHMENTS.

aws ecs describe-clusters \
    --include ATTACHMENTS \
    --clusters sampleCluster

Output:

{
    "clusters": [
        {
            "clusterArn": "arn:aws:ecs:af-south-1:123456789222:cluster/sampleCluster",
            "clusterName": "sampleCluster",
            "status": "ACTIVE",
            "registeredContainerInstancesCount": 0,
            "runningTasksCount": 0,
            "pendingTasksCount": 0,
            "activeServicesCount": 0,
            "statistics": [],
            "tags": [],
            "settings": [],
            "capacityProviders": [
                "sampleCapacityProvider"
            ],
            "defaultCapacityProviderStrategy": [],
            "attachments": [
                {
                    "id": "a1b2c3d4-5678-901b-cdef-EXAMPLE22222",
                    "type": "as_policy",
                    "status": "CREATED",
                    "details": [
                        {
                            "name": "capacityProviderName",
                            "value": "sampleCapacityProvider"
                        },
                        {
                            "name": "scalingPolicyName",
                            "value": "ECSManagedAutoScalingPolicy-3048e262-fe39-4eaf-826d-6f975d303188"
                        }
                    ]
                }
            ],
            "attachmentsStatus": "UPDATE_COMPLETE"
        }
    ],
    "failures": []
}

For more information, see Amazon ECS Clusters in the Amazon ECS Developer Guide.